Can Watt's linkage be called a parallel mechanism with 1 DOF?

16 June 2022 1 5K Report

I think I can't understand the definition of 1 DOF parallel mechanism. Is a parallelogram linkage parallel mechanism with 1 DOF? What do you think?

Anton Antonov

I think we can call it parallel, regardless of the number of DOFs.

In a parallel mechanism, the output link is connected to the base by several (at least two) kinematic chains. In the case of the Watt's linkage (and in any other four-bar linkage shown above), we have two RR kinematic chains.

Moreover, if we consider the rocker instead of the coupler as an output link, we can still treat the mechanism as parallel with one RRR chain and one trivial R chain.

Badges
Science topic

Similar topics
Cognitive Science
Thinking

More Ksenia Erastova's questions See All

Index of moderated mediation?

Sorry, couldn't understand it from Process docaddendum. I've got a model 74 (when X is also a moderator between mediator and Y) with continuous variables, and my index has CI crossing zero. What...

03 October 2016 9,189 14 View

What are the recent works on the futurology of architecture?

Hi, I look for articles, books or any other types of academic works on the futurology of architecture and living space. Namely, I'm interested in the structural (organizational) development in...

01 June 2016 6,193 7 View

Different results in PROCESS and SPSS?

I did mediation and moderation of one model in these programs. Mediation results were the same, but moderation in PROCESS was different: while in SPSS both variables were significant (p=0.001), in...

01 January 1970 1,349 5 View

What are the values needed for gabor filter's parameter for cifar10 data?

Hi, I implemented a code to gabor filter cifar10 data but the images after being filtered and stacked are not clear like the original images. I think the problem is in the way I am using the...

03 March 2021 6,317 1 View

New Journal, "Integrative Psychological and Behavioral Science" -- do you not know, and have you not seen, this done before?

Question to you and THEM, the New Journal, "Integrative Psychological and Behavioral Science" -- do you not know, and have you not seen, this done before? There appears to be a core problem for...

02 March 2021 3,024 2 View

Is it necessary to report effect size (ES) in statistics of biomedical research given that we already report p values routinely?

Pls share your thoughts

01 March 2021 7,330 4 View

Which reagent is best among 'Dimethylglyoxime" and "Dithiothreitol" for spectroscopic determination of Nickel ?

What I think is Dithiothreitol. As it is water-soluble and does not form a precipitate. But, the thing is it contains sulphur which is quite hazardous to aquatic animals.

01 March 2021 8,374 4 View

How to identify what type of fillers are in a polymer?

Hello everyone, I have some PHAs blended with fillers and nucleating agents, yet I don't know what kind of fillers or nucleating agents. The producer has shut down and there's no way to get in...

24 February 2021 1,356 8 View

Is it mandatory to specify Subjects Combinations in Generalized Linear Mixed Models (SPSS)?

Hi all, I have data with two levels: lets think of the classic example of students and schools. When running the analysis in SPSS and selecting the Random Effects, we can select (we can or we...

24 February 2021 7,379 4 View

Do you think there is cognitive oversaturation in the current pandemic? What impact can this have? And other manifestations?

Dear colleagues, Do you think there is cognitive oversaturation in the current pandemic? What impact can this have? And other manifestations? The question is mainly aimed at adolescents (pupils,...

23 February 2021 7,796 4 View

Is it possible that Cancer cells could survive in heparinized blood for 48 hours?

Hi everyone, I am just wondering if we incubated 200 microliter of whole blood with 50 microliter of cancer cells(1bout 5000cells) do you think that cancer would survive for 48 hours?

23 February 2021 3,840 3 View

How to minimise the risk of being abused the profile of potential participants tagged in a social media post?

Dear colleagues, I got this one in one project I did ethics review. It's great to hear about your thoughts/experiences. "Doing an open recruitment online (i.e., via Facebook) requires public...

22 February 2021 3,322 3 View

What type of SPSS analyses should I use for my Dissertation?

I'm currently working on my Dissertation and I'm trying to think of the best analyses that I should use for my study. I'm using three questionnaires for this and two different groups, 1st group...

22 February 2021 1,351 4 View